Wrench



(No Model.)

J. P. TINER.

WRBNGH. No. 573,313. Patented Dec. 15, 1896 W itnesses. Inventor.

i4! Attorney.

NITED- STATES PATENT Prion.

JOHN F. TINER, SUTIIERLAND SPRINGS, TEXAS, ASSIGNOR OF THREE- EIGHTI-ISTO ELLA J. NEWTON, OF AUSTIN, TEXAS.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 573,313, dated December15, 1896.

Application filed April 14, 1896. Serial No. 587,529. (No model.)

To call whom it may concern.-

Be it known that I, JOHN F. TINER, a citizen of the United States, and aresident of Sutherland Springs, in the county of Wilson and State ofTexas, have invented certain new and useful Improvements in renches; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, ref erence being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

Figure 1 is a side view of a wrench embodying my invention, itsapplication to different sizes of nuts being indicated by dotted lines;and Fig. 2 is a perspective view of the jaw portions of the wrench.

This invention is designed to provide a nutwrench of improved character;and it consists in the novel construction and combination of parts, allas hereinafter described, and pointed out in the appended claim.

Referring to the accompanying drawings, the letters A and B designatethe two interpivoted bars or members of which and a spring 0 the wrenchconsists. Each of said bars is somewhat enlarged and offset at itspivotal portion a, which is about midway of its length, the offset beingsufficient to bring the inner edge of the handle portion of each membersubstantially into line with the inner face of the jaw portion of thesame member. The jaw portion of the member 13 is straight from itspivoted portion a to a point cl, at which it is bent outward in its ownplane, at an oblique angle, to form the jaw proper. The inner face ofthis jaw is formed with a series of steps or offset shoulders f, whichare at substantially right angles to the plane of the straight portionfrom a to (Z. The said shoulders may, however, be at slightly acuteangles to said straight portion, and the term at substantially rightangles may be so underright angles to the inner face of the jaw andsubstantially parallel with the transverse faces of the shoulders f ofthe opposite jaw. It will be observed, therefore, that when the wrenchis in operation the point a: of said projection or shoulder is nearer tothe hand of the operator than is the angle at g, which catches thecorner of the nut, and that it will be consequently impossible for thewrench to slip off the nut in turning.

The spring 0, which is for the purpose of normally holding the jawsopen, is interposed between the two jaw portions, its outer end beingfastto the member A, while its inner or free end is secured to themember 113.

The wrench is always ready for use without any adjustment whatever andwill fit all sizes of nuts. The operator has simply to catch the nut inthe angle y and grip the handles, when the opposite corner of the nutwill be caught by the corresponding shoulder f. Inasm uch as the longeror connecting walls of these shoulders are substantially parallel withthe face of the opposite jaw the grip upon the nut is perfect. The pivotbeing about midway the length of the members the two jaws have a nearlyparallel movement, while at the same time the operator has ampleleverage, increased largely by the angle of the jaws.

The construction as above described is such that as the jaw portions areclosed the longer or longitudinal walls of the offsets f comesuccessively into substantially parallel relation to the face of theopposite jaw portion adjacent to the claw projection h, while theirtransverse or shorter faces come into similar relation to the inner faceh of said projection.

The drawings show the wrench in position for turning the nut on. To takea nut off, the wrench may be turned over to reverse it action.

Owing to the character of the bite or grip which the wrench takes of thenut it will not deface the corners.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is--- In a wrench, the two interpivotedmembers A and B, having elongated shanks forward of their pivotal point,the shank of one member terminating in an inwardly-bent jaw portionhaving the claw or shoulder 7b, and the other into similar relation tothe inner face of the 10 of said shanks terminating in an outwardlyclawor shoulder h substantially as specified. bent jaw portion the innerface of which is In testimony whereof I affix my signature formed with aseries of steps or offsets Whose in presence of two Witnesses.

5 longitudinal Walls are arranged to be successively brought intosubstantially parallel re- JOHN F. TINER. lation to the face of theopposite jaw portion Witnesses: adjacent to the claw as the two jawportions 0. B. BROWN,

are closed, and whose transverse walls come GRATZ BROWN.

